====== ZFS - Structure - Datasets ====== A ZFS dataset is roughly analogous to a standard, mounted filesystem—like a conventional filesystem. * Each ZFS dataset has its own set of underlying properties. * A dataset may have a quota assigned to it. * In addition to datasets, ZFS also supports zvols. * A zvol is roughly analogous to a dataset, except it does not actually have a filesystem in it. It is just a block device.